邻居们都觉得他是个疯子，因为他每天穿着睡衣遛猫。

The neighbors all think he's a ___wacko because he walks his cat in pajamas every day.

他居然想在屋顶上建个游泳池，真是疯了。

His idea to build a swimming pool on the roof is completely ___wacko.